Multiple Rail Sighting Device

ABSTRACT

A sighting device for a firearm accessory includes a first coupling member, a second coupling member, and a rail arrangement. The first coupling member is supported on an upper half portion of the firearm accessory. The second coupling member is supported on a lower half portion of the firearm accessory for enabling the firearm accessory to be detachably engage with a firearm rail of the firearm. The rail arrangement includes at least a mounting rail formed on one of the first coupling member and the second coupling member, wherein the mounting rail allows the firearm accessory to be mounted onto at least one additional firearm accessory so as to eliminate a need to individually attach the additional firearm accessory to the firearm.

NOTICE OF COPYRIGHT

A portion of the disclosure of this patent document contains materialwhich is subject to copyright protection. The copyright owner has noobjection to any reproduction by anyone of the patent disclosure, as itappears in the United States Patent and Trademark Office patent files orrecords, but otherwise reserves all copyright rights whatsoever.

BACKGROUND OF THE PRESENT INVENTION

The present invention relates to a sighting device, and moreparticularly to a multiple rail sighting device comprising a multiplerail arrangement which enables multiple firearm accessories to beconveniently mounted onto a scope.

DESCRIPTION OF RELATED ARTS

Conventional firearm, such as a gun or a rifle, usually needs a sightingdevice such as a telescopic scope for assisting the shooter toaccurately locate the target and perform the shooting. Conventionally, ascope is mounted onto the gun through a mounting rail provided on thegun. The scope needs to be mounted at the mounting rail for securelymounting onto the gun. The shooter is then able to utilize thetelescopic scope to accomplish accurate shooting.

A problem with the traditional firearm and the scope is that when ashooter needs shooting, he or she may need more than one firearmaccessory. For example, the shooter may need more than one scopes havingdifferent telescopic ability for shooting different objects. Moreover,the shooter may also need a laser locator for accurately pinpointing thetarget, especially targets which are positioned at a great distance fromthe shooter.

When the shooter needs more than one firearm accessories, the firearmaccessories have to be individually mounted onto the firearm. Thispresents a very troublesome and inconvenient way of attaching thefirearm accessories onto the firearm. More specifically, if thestructure of the firearm is such that it is impossible for additionalfirearm accessories to be mounted thereon, the shooter has no choice butto give up using the additional firearm accessories.

SUMMARY OF THE PRESENT INVENTION

The invention is advantageous in that it provides a multiple railsighting device comprising a multiple rail arrangement which enablesmultiple firearm accessories to be conveniently mounted onto a scope.

Another advantage of the invention is to provide a multiple railsighting device comprising a multiple rail arrangement, which provides aplurality of mounting rails on the scope for allowing a correspondingnumber of firearm accessories to be mounted thereon respectively.

Another advantage of the invention is to provide a multiple railsighting device comprising a multiple rail arrangement, wherein aplurality of mounting rails are formed on the scope without affectingthe original structure thereof. In other words, the present inventionfits a wide variety of scopes and therefore facilitates widespreadapplication.

Another advantage of the invention is to provide a multiple railsighting device comprising a first coupling member and a second couplingmember for supporting the multiple rail arrangement, wherein the firstcoupling member and the second coupling member are mounted onto thescope without damaging it. In other words, there is no need to haveconnectors penetrating into the scope for mounting the multiple railsight device of the present invention.

Another advantage of the invention is to provide a multiple railsighting device, wherein the first and second coupling members can becoupled to an existing scope as an add-on mounting device to enableother firearm accessories to be mounted at the existing scope.

Another advantage of the invention is to a multiple rail sightingdevice, which does not require to alter the original structural designof the mounting structure of the firearm, so as to minimize themanufacturing cost of the mounting structure of the firearmincorporating with the multiple rail sighting device of the presentinvention.

Another advantage of the invention is to provide a multiple railsighting device, wherein no expensive or complicated structure isrequired to employ in the present invention in order to achieve theabove mentioned objects. Therefore, the present invention successfullyprovides an economic and efficient solution for providing a secure andreliable configuration for detachably mounting additional accessories atthe firearm with compact and ergonomic design.

Additional advantages and features of the invention will become apparentfrom the description which follows, and may be realized by means of theinstrumentalities and combinations particularly point out in theappended claims.

According to the present invention, the foregoing and other objects andadvantages are attained by providing a sighting device for a scope whichacts as a firearm accessory and is mounted on a firearm having a firearmrail, wherein the sighting device comprises:

a first coupling member supported on a upper half portion of the scope;

a second coupling member, which is supported on a lower half portion ofthe scope, having an elongated coupling slot formed thereon todetachably engage with the firearm rail of the firearm; and

a rail arrangement which comprises at least a mounting rail formed onone of the first coupling member and the second coupling member, whereinthe mounting rail, having an indented rail configuration, allows thescope to be mounted onto at least one additional firearm accessory so asto eliminate a need to individually attach the additional firearmaccessory to the firearm.

In accordance with another aspect of the invention, the presentinvention comprises a rail apparatus for a firearm accessory mounted ona firearm, comprising:

a first coupling member for enclosing an upper portion of the firearmaccessory;

a second coupling member for enclosing a lower portion of the firearmaccessory, wherein the first and second coupling members are coupled forencircling the firearm accessory therewithin, and

a rail arrangement which comprises at least a mounting rail formed onone of the first and second coupling members, wherein the mounting railis arranged for enabling an additional firearm accessory to bedetachably mounted to the firearm accessory so as to eliminate a need toindividually attach the additional firearm accessory to the firearm.

Still further objects and advantages will become apparent am aconsideration of the ensuing description and drawings.

These and other objectives, features, and advantages of the presentinvention will become apparent from the following detailed description,the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a multiple sighting device mounted on afirearm according to a first preferred embodiment of the presentinvention.

FIG. 2 is a perspective view of the multiple sighting device accordingto the above first preferred embodiment of the present invention.

FIG. 3 is an exploded perspective view of the multiple sighting deviceaccording to the above first preferred embodiment of the presentinvention.

FIG. 4 is a side view of the multiple sighting device according to theabove first preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of the multiple sighting device accordingto above first preferred embodiment of the present invention,illustrating an additional firearm accessory mounted to the multiplesighting device.

FIG. 6 is a perspective view of a multiple sighting device mounted on afirearm according to a second preferred embodiment of the presentinvention.

FIG. 7 is a perspective view of the multiple sighting device accordingto the above second preferred embodiment of the present invention.

FIG. 8 is an exploded perspective view of the multiple sighting deviceaccording to the above second preferred embodiment of the presentinvention.

FIG. 9 is a side view of the multiple sighting device according to theabove second preferred embodiment of the present invention.

FIG. 10 is a schematic diagram of the multiple sighting device accordingto the above second preferred embodiment of the present invention,illustrating an additional firearm accessory mounted to the multiplesighting device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The following description is disclosed to enable any person skilled inthe art to make and use the present invention. Preferred embodiments areprovided in the following description only as examples and modificationswill be apparent to those skilled in the art. The general principlesdefined in the following description would be applied to otherembodiments, alternatives, modifications, equivalents, and applicationswithout departing from the spirit and scope of the present invention.

Referring to FIG. 1 to FIG. 4 of the drawings, a sighting device for ascope 70 of a firearm 80 (such as a rifle) according to a preferredembodiment of the present invention is illustrated, in which thesighting device comprises a first coupling member 10, a second couplingmember 20 and a multiple rail arrangement 30. The firearm accessory,such as a scope 70 as an example, is mounted on a firearm 80 having afirearm rail 81. Accordingly, the scope 70 comprises a tubular lenshousing 71 that lens are supported therein to define an objective end711 and a sight (ocular) end 712.

The first coupling member 10 is supported on an upper half portion ofthe scope 70. The second coupling member 20 is supported on a lower halfportion of the scope 70, wherein the second coupling member 20 has anelongated coupling slot 21 formed thereon to detachably engage with thefirearm rail 81 of the firearm 80.

Accordingly, when the first and second coupling members 10, 20 arecoupled with each other to form an elongated tubular member, anelongated receiving cavity is formed within the first and secondcoupling members 10, 20 to receive the scope 70 in the receiving cavity.It is worth mentioning that the objective end 711 and the sight end 712of the scope 70 are located at two opposite ends of the receivingcavity.

On the other hand, the multiple rail arrangement 30 comprises at least amounting rail 31 formed on at least one of the first coupling member 10and the second coupling member 20, wherein the mounting rail 31 allowsthe scope 70 to be mounted onto at least one additional firearmaccessory so as to eliminate a need to individually attach theadditional firearm accessory to the firearm 80.

The first coupling member 10 comprises a first semi-tubular body 12having a radius of curvature substantially the same as that of the scope70, and is fittedly mounted onto the upper half portion thereof.Moreover, the first coupling member 10 has a predetermined length whichcovers a predetermined portion of the scope 70. The first couplingmember 10 further has a plurality of first through slots 13 formed onthe first tubular body 12 and aligned with a plurality of adjustmentknobs 72 of the scope 70. Thus, the adjustment knobs 72 can beconveniently accessed by the shooter even though the first couplingmember 10 is mounted on the scope 70. It is worth mentioning that eachof the first through slots 13 may be embodied as having different shapesso as to fit different sizes and shapes of the adjustment knobs 72.

On the other hand, the second coupling member 20 comprises a secondsemi-tubular body 23 having a radius of curvature substantially the sameas that of the lower half portion of the scope 70. The secondsemi-tubular body 23 is fittedly mounted onto the lower half portion ofthe scope 70 and is arranged to be securely mounted with the firsttubular member 10 so as to fittedly and substantially embed the entireperimeter of the scope 70. Similarly, the second coupling member 20further has a plurality of second through slots 26 formed on the secondtubular body 23 and aligned with a plurality of adjustment knobs 72 ofthe scope 70. Thus, the adjustment knobs 72 can be conveniently accessedby the shooter even though the second coupling member 20 is mounted onthe scope 70. As the first through slots 13, each of the second throughslots 26 may be embodied as having different shapes so as to fitdifferent sizes and shapes of the adjustment knobs 72.

According to the above preferred embodiment of the present invention,the multiple rail arrangement 30 further comprises a plurality ofconnectors 32 spacedly provided on the first coupling member 10 and thesecond coupling member 20 so as to securely mount the first couplingmember 10 and the second coupling member 20 together on the scope 70.More specifically, each of the connectors 32 is a screw having athreaded portion formed thereon. The first coupling member 10 has aplurality of first connecting holes 11 spacedly formed thereon, whilethe second coupling member 20 has a plurality of second connecting holes22 formed thereon and aligned with the first connecting holes 11respectively, wherein each of the connectors 32 is arranged to penetratea corresponding first connecting hole 11 and a corresponding secondconnecting hole 22 for mounting the first coupling member 10 with thesecond coupling member 20. It is worth mentioning that when connectingthe first and the second coupling member 10, 20, the connectors 32 donot physically contact the scope 70 and do not in any way cause physicaldamage to the scope 70.

In particular, the first connecting holes 11 are spacedly formed alongtwo bottom longitudinal edges of the first semi-tubular body 12 of thefirst coupling member 10. The second connecting holes 22 are spacedlyformed along two upper longitudinal edges of the second semi-tubularbody 23 of the second coupling member 20, wherein when the bottomlongitudinal edges of the first coupling member 10 are coupled with theupper longitudinal edges of the second coupling member 20 to align thefirst connecting holes 11 with the second connecting holes 22respectively, the connectors 32 are penetrated through the first andsecond connecting holes 11, 22 for mounting the first coupling member 10with the second coupling member 20.

Hence, the tighter is the screwing by the connectors 32, the more secureis the connection between the first coupling member 10 and the secondcoupling member 20. However, the tight and secure connection between thefirst coupling member 10 and the second coupling member 20 does notimpart any damage to the firearm accessory (i.e. the scope 70 in thispreferred embodiment) because the first and the second coupling members10, 20 are fittedly engaged with the scope 70.

As shown in FIG. 1 to FIG. 4 of the drawings, the first coupling member10 further comprises a plurality of first mounting panels 14transversely and outwardly extended from the first tubular body 12 atopposite sides respectively, wherein the first mounting panels 14 arelongitudinally and spacedly extended along the first semi-tubular body12.

The second coupling member 20 further comprises a plurality of secondmounting panels 24 transversely and outwardly extended from the secondtubular body 23 at opposite sides and aligned with the first mountingpanels 14 respectively. The second mounting panels 14 are longitudinallyand spacedly extended along the second semi-tubular body 23.

The first connecting holes 11 are spacedly formed on the first mountingpanels 14 along the two bottom longitudinal edges of the firstsemi-tubular body 12 while the second connecting holes 22 are formed onthe second mounting panels 24 along two upper longitudinal edges of thesecond semi-tubular body 23. Thus, in order to mount the first couplingmember 10 with the second coupling member 20, each of the connectors 32is arranged to pass through the first connecting hole 11 and acorresponding second connecting hole 22. Note that each of theconnectors 32 has a threaded portion and the first and the secondconnecting holes 11, 22 are bored holes so that the connection betweenthe first coupling member 10 and the second coupling member 20 can betightened by screwing the connectors 32 into the first and the secondconnecting holes 11, 22. In other words, by tightening the first and thesecond coupling member 10, 20, they are securely mounted together (i.e.with respect to each other) and is peripherally mounted on the scope 70.

The second coupling member 20 further comprises a mounting base 25provided at a bottom side of the second tubular body 23, wherein themounting base 25 is arranged to be securely and detachably mounted ontothe firearm rail 81 of the firearm 80. More specifically, the mountingbase 25 comprises a plurality of connecting knobs 251 and has anengagement slot 252 formed on the bottom side of the mounting base 25for mounting on the firearm rail 81 of the firearm 80.

According to the preferred embodiment, the mounting rail 31 is arrangedto guide the additional firearm accessory to be detachably mounted alongthe first and/or second coupling members 10, 20. Therefore, the mountingrail 31 provides a guiding function to the additional firearm accessoryto be mounted on the scope 70. For example, “Picatinny rail system or“Weaver” rail system is a protruded rail system comprising a pluralityof raised ridges, wherein the firearm accessory can be mounted at theprotruded rail system by transversely sliding an adapter of the firearmaccessory at the protruded rail system and fastening the adapter at theprotruded rail system via a bolt. In other words via the protruded railsystem, the additional firearm accessory can be mounted at the protrudedrail system at the transverse direction of the scope 70.

As shown in FIG. 2 to FIG. 4, the mounting rail of the present inventionis indented rail system, wherein the additional firearm accessory can bemounted at the indented rail system at the longitudinal direction of thescope 70. In particular, the mounting rail 31 is a Keymod rail systemwhich comprises a plurality of keymod slots. Each of the keymod slotshas a keyhole configuration defining an enlarged slot portion withlarger diameter and a narrow slot portion extended therefrom, whereinthe keymod slot is chamfered on the backside. Therefore, a keymod nut atthe additional firearm accessory can be disposed in the enlarged slotportion and slid to the narrower slot portion in order to secure theadditional firearm accessory. The Keymod rail system can solve theexisting problems by providing an ergonomic mounting way to mount theadditional firearm accessory at the firearm corresponding to thedischarge axis thereof, and by substantially reducing the overall weightof the firearm incorporating with the Keymod mounting slots.

In particular, the first and second coupling members 10, 20 are coupledwith each other to form the elongated tubular member defining aplurality of longitudinal faces, wherein the mounting rail 31 is formedon at least of the longitudinal faces.

Each of the mounting rails 31 comprises a rail base 311 formed at thefirst coupling member 10 at each longitudinal face thereof, and aplurality of rail guiders 312 spacedly formed on the rail base 311 todefine a rail channel 313 for an additional firearm accessory to bemounted thereon. Accordingly, the rail guiders 312 are a series ofthrough rail guiders aligned along a longitudinal direction of the firstcoupling member 10. In other words, the series of rail guiders 312 areformed at each longitudinal face of the first coupling member 10.

According to the preferred embodiment of the present invention, themultiple rail arrangement 30 comprises three mounting rails 31 formed ontop, and at two sides of the first coupling member 10 respectively.Thus, the first mounting panels 14 are protruded from two sides of thefirst tubular body 12 and two of the rail bases 311 are extended fromthe first mounting panels 14 respectively. Furthermore, the remainingrail base 311 is extended from the top side of the first tubular body 12for forming the corresponding rail channel 313.

In particular, each of the rail guiders 312 is a keymod slot formed onthe rail base 311, wherein the rail channel 313 is defined at alongitudinal slot space between the enlarged slot portion and the narrowslot portion of each of the keymod slot. In other words, unlike theprotruded rail system, there is no protrusion outwardly protruded fromthe rail base 311 of the present invention.

It is worth mentioning that the each of the rail bases 311 extends alongthe longitudinal direction of the scope 70 so as to form the railchannel 313. Thus, the additional firearm accessory 80′, which is alocker ring, is slidably engaged with the rail channel 313 for mountingonto the sighting device of the present invention, as shown in FIG. 5.

The operation of the present invention is as follows: a user or themanufacturer of the firearm 80 may mount the sighting device of thepresent invention onto the firearm 80 preferably through the firearmrail 81 and the mounting base 25. In particular, the first couplingmember 10 is coupled with the second coupling member 20 to encircle thelens housing 71 of the scope 70 within the first and second couplingmembers 10, 20. Then, the mounting base 25 is mounted at the firearmrail 81 of the firearm 80 to support the scope 70 on the firearm 80.

After that, the user may then mount additional firearm accessory ontoone of mounting rails 31 so as to mount the additional firearm accessory80′, such as a locker ring, a flashlight module, a laser pointer oranother scope onto the firearm 80, as shown in FIG. 5. The mostimportant point is that the firearm accessories need not be individuallymounted onto the firearm 80. Rather, the sighting device provides aplatform for mounting many firearm accessories. The scope 70 describedabove is merely an example of firearm accessory and it can be embodiedas different devices.

As shown in FIG. 6 to FIG. 9, a multiple sighting device according to asecond embodiment illustrates an alternative mode of the firstembodiment, wherein the first and second coupling members 10A, 20A arecoupled with each other to form a rail apparatus to detachably couplewith the scope 70.

As it is mentioned above, the scope 70 comprises a tubular lens housing71 that lens are supported therein to define an objective end 711 and asight (ocular) end 712. Conventionally, the scope 70 can be directlymounted to the firearm rail 81 of the firearm 80. In other words, thescope 70 can be an existing scope device to be detachably mounted to thefirearm 80. In particular, the scope 70 comprises a mounting base 75provided at a bottom side of the lens housing 71, wherein the mountingbase 75 is arranged to be securely and detachably mounted onto thefirearm rail 81 of the firearm 80. More specifically, the mounting base75 comprises an actuator 751 and has an engagement slot 752 formed onthe bottom side of the mounting base 75 for mounting on the firearm rail71 of the firearm 70. Accordingly, the actuator 751 is a lockingmechanism serving as a quick releasing mechanism to quickly lock andunlock the mounting base 75 at the firearm rail 71 of the firearm 70. Itis appreciated that the actuator 751 can also be the connecting knob formounting the mounting base 75 on the firearm rail 81 of the firearm 80.

The first coupling member 10A according to the second embodiment has thesame structural configuration of that of the first embodiment, whereinthe first coupling member 10A is supported on an upper portion of thescope 70. In particular, the first coupling member 10A is supported onthe upper half portion of the lens housing 71 of the scope 70. The firstcoupling member 10A comprises a first semi-tubular body 12A having aradius of curvature substantially the same as that of the lens housing71 of the scope 70, and is fittedly mounted onto the upper half portionthereof. Moreover, the first coupling member 10A has a predeterminedlength which covers a predetermined portion of the scope 70. The firstcoupling member 10A further has a plurality of first through slots 13Aformed on the first tubular body 12A and aligned with a plurality ofadjustment knobs 72 of the scope 70. Thus, the adjustment knobs 72 canbe conveniently accessed by the shooter even though the first couplingmember 10A is mounted on the scope 70. It is worth mentioning that eachof the first through slots 13A may be embodied as having differentshapes so as to fit different sizes and shapes of the adjustment knobs72.

The second coupling member 20A according to the second embodiment hasthe similar structural configuration of that of the first embodiment,wherein the second coupling member 20A is supported on a lower portionof the lens housing 71 of the scope 70. In particular, the secondcoupling member 20A is supported on the lower half portion of the lenshousing 71 of the scope 70. Accordingly, when the first and secondcoupling members 10A, 20A are coupled with each other to form anelongated tubular member, an elongated receiving cavity is formed withinthe first and second coupling members 10A, 20A to receive the scope 70in the receiving cavity. It is worth mentioning that the objective end711 and the sight end 712 of the scope 70 are located at two oppositeends of the receiving cavity.

The second coupling member 20A comprises a second semi-tubular body 23Ahaving a radius of curvature substantially the same as that of the lowerhalf portion of the lens housing 71 of the scope 70. The secondsemi-tubular body 23A is fittedly mounted onto the lower half portion ofthe scope 70 and is arranged to be securely mounted with the firsttubular member 10A so as to fittedly and substantially embed the entireperimeter of the scope 70. Similarly, the second coupling member 20Afurther has a plurality of second through slots 26A formed on the secondtubular body 23A and aligned with a plurality of adjustment knobs 72 ofthe scope 70. Thus, the adjustment knobs 72 can be conveniently accessedby the shooter even though the second coupling member 20A is mounted onthe scope 70. As the first through slots 13A, each of the second throughslots 26A may be embodied as having different shapes so as to fitdifferent sizes and shapes of the adjustment knobs 72.

The second coupling member 20A further has an elongated guiding slot 27Afor enabling the mounting base 75 of the scope 70 passing through tomount on the firearm rail 81 of the firearm 80. The guiding slot 27A isa through slot formed at the bottom side of the second semi-tubular body23A, wherein when the mounting base 75 of the scope 70 passes throughthe guiding slot 27A, the lower half portion of the lens housing 71 ofthe scope 70 is supported on the second semi-tubular body 23A.

Therefore, the first and second coupling members 10A, 20A are coupledwith each other to encircle the lens housing 71 of the scope 70, suchthat the first and second coupling members 10A, 20A can be incorporatedwith any existing scope device having the mounting base 75. The existingscope device does not require to alter the original structure toincorporate with the first and second coupling members 10A. 20A.

Similarly, the rail arrangement 30A comprises at least a mounting rail31A formed on at least one of the first coupling member 10A and thesecond coupling member 20A, wherein the mounting rail 31A allows thescope 70 to be mounted onto at least one additional firearm accessory soas to eliminate a need to individually attach the additional firearmaccessory to the firearm 80.

The rail arrangement 30A further comprises a plurality of connectors 32Aspacedly provided on the first coupling member 10A and the secondcoupling member 20A so as to securely mount the first coupling member10A and the second coupling member 20A together on the scope 70. Morespecifically, each of the connectors 32A is a screw having a threadedportion formed thereon. The first coupling member 10A has a plurality offirst connecting holes 11A spacedly formed thereon, while the secondcoupling member 20A has a plurality of second connecting holes 22Aformed thereon and aligned with the first connecting holes 11Arespectively, wherein each of the connectors 32A is arranged topenetrate a corresponding first connecting hole 11A and a correspondingsecond connecting hole 22A for mounting the first coupling member 10Awith the second coupling member 20A. It is worth mentioning that whenconnecting the first and the second coupling member 10A, 20A, theconnectors 32A do not physically contact the scope 70 and do not in anyway cause physical damage to the scope 70.

In particular, the first connecting holes 11A are spacedly formed alongtwo bottom longitudinal edges of the first semi-tubular body 12A of thefirst coupling member 10A. The second connecting holes 22A are spacedlyformed along two, upper longitudinal edges of the second semi-tubularbody 23A of the second coupling member 20A, wherein when the bottomlongitudinal edges of the first coupling member 10A are coupled with theupper longitudinal edges of the second coupling member 20A to align thefirst connecting holes 11A with the second connecting holes 22Arespectively, the connectors 32A are penetrated through the first andsecond connecting holes 11A, 22A for mounting the first coupling member10A with the second coupling member 20A.

Hence, the tighter is the screwing by the connectors 32A, the moresecure is the connection between the first coupling member 10A and thesecond coupling member 20A. However, the tight and secure connectionbetween the first coupling member 10 and the second coupling member 20Adoes not impart any damage to the firearm accessory (i.e. the scope 70in this preferred embodiment) because the first and the second couplingmembers 10A, 20A are fittedly engaged with the scope 70.

As shown in FIG. 6 to FIG. 9 of the drawings, the first coupling member10A further comprises a plurality of first mounting panels 14Atransversely and outwardly extended from the first tubular body 12A atopposite sides respectively, wherein the first mounting panels 14A arelongitudinally and spacedly extended along the first semi-tubular body12A.

The second coupling member 20A further comprises a plurality of secondmounting panels 24A transversely and outwardly extended from the secondtubular body 23A at opposite sides and aligned with the first mountingpanels 14A respectively. The second mounting panels 14A arelongitudinally and spacedly extended along the second semi-tubular body23A.

The first connecting holes 11A are spacedly formed on the first mountingpanels 14A along the two bottom longitudinal edges of the firstsemi-tubular body 12A while the second connecting holes 22A are formedon the second mounting panels 24A along two upper longitudinal edges ofthe second semi-tubular body 23A. Thus, in order to mount the firstcoupling member 10A with the second coupling member 20A, each of theconnectors 32A is arranged to pass through the first connecting hole 11Aand a corresponding second connecting hole 22A. Note that each of theconnectors 32A has a threaded portion and the first and the secondconnecting holes 11A, 22A are bored holes so that the connection betweenthe first coupling member 10A and the second coupling member 20A can betightened by screwing the connectors 32A into the first and the secondconnecting holes 11A, 22A. In other words, by tightening the first andthe second coupling member 10A, 20A, they are securely mounted together(i.e. with respect to each other) and is peripherally mounted on thescope 70.

According to the second embodiment, the mounting rail 31A is arranged toguide the additional firearm accessory to be detachably mounted alongthe first and/or second coupling members 10A, 20A. As shown in FIG. 7 toFIG. 9, the mounting rail 31A of the present invention is an indentedrail system, wherein the additional firearm accessory can be mounted atthe indented rail system at the longitudinal direction of the scope 70.In particular, the mounting rail 31A is a Keymod rail system whichcomprises a plurality of keymod slots. In particular, the first andsecond coupling members 10A, 20A are coupled with each other to form theelongated tubular member defining a plurality of longitudinal faces,wherein the mounting rail 31A is formed on at least of the longitudinalfaces.

Each of the mounting rails 31A comprises a rail base 311A formed at thefirst coupling member 10A at each longitudinal face thereof, and aplurality of rail guiders 312A spacedly formed on the rail base 311A todefine a rail channel 313A for an additional firearm accessory to bemounted thereon. Accordingly, the rail guiders 312A are a series ofthrough rail guiders aligned along a longitudinal direction of the firstcoupling member 10A. In other words, the series of rail guiders 312A areformed at each longitudinal face of the first coupling member 10A.

According to the preferred embodiment of the present invention, themultiple rail arrangement 30A comprises three mounting rails 31A formedon top, and at two sides of the first coupling member 10A respectively.Thus, the first mounting panels 14A are protruded from two sides of thefirst tubular body 12A and two of the rail bases 311A are extended fromthe first mounting panels 14A respectively. Furthermore, the remainingrail base 311A is extended from the top side of the first tubular body12A for forming the corresponding rail channel 313A.

In particular, each of the rail guiders 312A is a keymod slot formed onthe rail base 311A, wherein the rail channel 313A is defined at alongitudinal slot space between the enlarged slot portion and the narrowslot portion of each of the keymod slot. In other words, unlike theprotruded rail system, there is no protrusion outwardly protruded fromthe rail base 311A of the present invention.

It is worth mentioning that the each of the rail bases 311A extendsalong the longitudinal direction of the scope 70 so as to form the railchannel 313A. Thus, the additional firearm accessory 80″, which is aflashlight module, is slidably engaged with the rail channel 313A formounting onto the sighting device of the present invention, as shown inFIG. 10.

The operation of the present invention is as follows: a user or themanufacturer of the firearm 80 may mount the sighting device of thepresent invention onto the firearm 80 preferably through the firearmrail 81 and the mounting base 75. In other words, the user is able toplace the mounting base 75 of the scope 70 through the guiding slot 27Aof the second coupling member 20A in order to mount the mounting base 75at the firearm rail 81 of the firearm 80. Then, the first couplingmember 10A is coupled with the second coupling member 20A to encirclethe lens housing 71 of the scope 70 within the first and second couplingmembers 10A, 20A.

After that, the user may then mount additional firearm accessory ontoone of mounting rails 31A so as to mount the additional firearmaccessory 80″, such as a locker ring, flashlight module, a laser pointeror another scope, onto the firearm 80, as shown in FIG. 10. The mostimportant point is that the firearm accessories need not be individuallymounted onto the firearm 80. Rather, the sighting device provides aplatform for mounting many firearm accessories. The scope 70 describedabove is merely an example of firearm accessory and it can be embodiedas different devices.

It is also worth mentioning that the exact number of mounting rails 31,31A provided on the first coupling member 10, 10A can be variedaccording to market needs and manufacturing circumstances. Each of themounting rails 31, 31A can be used to mount different firearm accessoryso that the shooter can utilize different firearm accessories forenhancing shooting quality. The first and second coupling members 10,10A, 20, 20A are coupled to form the elongated tubular member having apolygonal cross section to define the longitudinal faces thereat. Itwould be appreciated that the first and second coupling members 10, 10A,20, 20A can be coupled to form the elongated tubular member having acircular cross section to define the longitudinal faces thereat.

One skilled in the art will understand that the embodiment of thepresent invention as shown in the drawings and described above isexemplary only and not intended to be limiting.

It will thus be seen that the objects of the present invention have beenfully and effectively accomplished. The embodiments have been shown anddescribed for the purposes of illustrating the functional and structuralprinciples of the present invention and is subject to change withoutdeparture from such principles. Therefore, this invention includes allmodifications encompassed within the spirit and scope of the followingclaims.

1. A sighting device for firearm having a firearm rail, wherein saidsighting device comprises: a firearm accessory which comprises a scopeadapted for detachably coupling at the firearm rail of the firearm; afirst coupling member supported on an upper half portion of said firearmaccessory; a second coupling member, which is supported on a lower halfportion of said firearm accessory, having an elongated coupling slotformed thereon for detachably engaging with said firearm rail of saidfirearm; and a rail arrangement which comprises at least a mounting railformed on one of said first and second coupling members, wherein saidmounting rail has an indented rail configuration, wherein said mountingrail comprises at least a “KeyMod” rail system formed on one of saidfirst and second coupling members, wherein said mounting rail allowssaid firearm accessory to be mounted onto at least one additionalfirearm accessory so as to eliminate a need to individually attach saidadditional firearm accessory to said firearm.
 2. The sighting device, asrecited in claim 1, wherein said “KeyMod” rail system is formed on eachof top and side of said first coupling member.
 3. The sighting device,as recited in claim 1, wherein said first coupling member comprises afirst semi-tubular body having a radius of curvature substantially sameas that of said firearm accessory, and is fittedly mounted onto saidupper half portion thereof.
 4. The sighting device, as recited in claim3, wherein said second coupling member comprises a second semi-tubularbody having a radius of curvature substantially same as that of saidlower half portion of said firearm accessory, wherein said secondsemi-tubular body is fittedly mounted onto said lower half portion ofsaid firearm accessory and is arranged to be securely mounted with saidfirst tubular member so as to fittedly and substantially embed saidentire perimeter of said firearm accessory.
 5. The sighting device, asrecited in claim 4, wherein said rail arrangement further comprises aplurality of connectors spacedly provided on said first coupling memberand said second coupling member so as to securely mount said firstcoupling member and said second coupling member on said firearmaccessory, wherein each of said connectors is a screw having a threadedportion formed thereon, wherein said first coupling member has aplurality of first connecting holes spacedly formed thereon, while saidsecond coupling member has a plurality of second connecting holes formedthereon and aligned with said first connecting holes respectively,wherein each of said connectors is arranged to penetrate a correspondingfirst connecting hole and a corresponding second connecting hole formounting said first coupling member with said second coupling member. 6.The sighting device, as recited in claim 5, wherein said first couplingmember further comprises a plurality of first mounting panelstransversely and outwardly extended from said first tubular body atopposite sides respectively, whereas said second coupling member furthercomprises a plurality of second mounting panels transversely andoutwardly extended from said second tubular body at opposite sides andaligned with said first mounting panels respectively, wherein said firstconnecting holes are spacedly formed on said first mounting panels whilesaid second connecting holes are spacedly formed on said second mountingpanels.
 7. The sighting device, as recited in claim 1, wherein saidsecond coupling member further comprises a mounting base provided at abottom side of said second tubular body, wherein said mounting base isarranged for securely mounting onto said firearm.
 8. The sightingdevice, as recited in claim 1, wherein said first coupling memberfurther has a plurality of first through slots formed on said firsttubular body and aligned with a plurality of adjustment knobs of saidfirearm accessory so that said adjustment knobs is capable of beingconveniently accessed even though said first coupling member is mountedon said firearm accessory.
 9. The sighting device, as recited in claim1, wherein said second coupling member further has a plurality of secondthrough slots formed on said second tubular body and aligned with aplurality of adjustment knobs of said firearm accessory so that saidadjustment knobs are capable of being conveniently accessed even thoughsaid second coupling member is mounted on said firearm accessory.
 10. Arail apparatus for a firearm accessory mounted on a firearm, comprising:a first coupling member for enclosing an upper portion of said firearmaccessory; a second coupling member for enclosing a lower portion ofsaid firearm accessory, wherein said first and second coupling membersare coupled for encircling said firearm accessory therewithin, and arail arrangement which comprises at least a mounting rail formed on oneof said first and second coupling members, wherein said mounting rail isarranged for enabling an additional firearm accessory to be detachablymounted to said firearm accessory so as to eliminate a need toindividually attach said additional firearm accessory to said firearm.11. The rail apparatus, as recited in claim 10, wherein said mountingrail has an indented rail configuration defining a series of throughrail guiders aligned along a longitudinal direction.
 12. The railapparatus, as recited in claim 10, wherein said mounting rail is a“KeyMod” rail system.
 13. The rail apparatus, as recited in claim 10,wherein said second coupling member has an elongated guiding slot forenabling a mounting base of said firearm accessory passing through tomount on said firearm rail of said firearm.
 14. The rail apparatus, asrecited in claim 12, wherein said second coupling member has anelongated guiding slot for enabling a mounting base of said firearmaccessory passing through to mount on said firearm rail of said firearm.15. The rail apparatus, as recited in claim 10, wherein said first andsecond coupling members are coupled with each other to form an elongatedtubular member defining a plurality of longitudinal faces, wherein saidmounting rail is formed on at least of said longitudinal faces.
 16. Therail apparatus, as recited in claim 14, wherein said first and secondcoupling members are coupled with each other to form an elongatedtubular member defining a plurality of longitudinal faces, wherein saidmounting rail is formed on at least of said longitudinal faces.
 17. Therail apparatus, as recited in claim 10, wherein each of said first andsecond coupling members has a plurality of first through slots formedthereon for communicating with a plurality of adjustment knobs of saidfirearm accessory so as to enable said adjustment knobs to be accessedwhen said firearm accessory is encircled by said first and secondcoupling members.
 18. The rail apparatus, as recited in claim 16,wherein each of said first and second coupling members has a pluralityof first through slots formed thereon for communicating with a pluralityof adjustment knobs of said firearm accessory so as to enable saidadjustment knobs to be accessed when said firearm accessory is encircledby said first and second coupling members.
 19. The rail apparatus, asrecited in claim 10, wherein said first and second coupling members aredetachably coupled with each other via a connector unit which comprisesa plurality of connectors, a plurality of first connecting holesspacedly formed along two bottom longitudinal edges of said firstcoupling member, and a plurality of second connecting holes spacedlyformed along two upper longitudinal edges of said second couplingmember, such that when said bottom longitudinal edges of said firstcoupling member are coupled with said upper longitudinal edges of saidsecond coupling member to align said first connecting holes with saidsecond connecting holes respectively, said connectors are penetratedthrough said first and second connecting holes for mounting said firstcoupling member with said second coupling member.
 20. The railapparatus, as recited in claim 18, wherein said first and secondcoupling members are detachably coupled with each other via a connectorunit which comprises a plurality of connectors, a plurality of firstconnecting holes spacedly formed along two bottom longitudinal edges ofsaid first coupling member, and a plurality of second connecting holesspacedly formed along two upper longitudinal edges of said secondcoupling member, such that when said bottom longitudinal edges of saidfirst coupling member are coupled with said upper longitudinal edges ofsaid second coupling member to align said first connecting holes withsaid second connecting holes respectively, said connectors arepenetrated through said first and second connecting holes for mountingsaid first coupling member with said second coupling member.